Unformatted text preview: ntly launched astrometric mission. How far away would that dime
need to subtend this small of an angle? Compare this to the distance to
2. On January 21, 2014, a fairly bright TypeIa (white-dwarf deflagration) supernova
was discovered in the galaxy M82, in Ursa
Major (Discovery image shown here is
credited to UCL/University of London
Observatory/Steve Fossey/Ben Cooke/Guy
Pollack/Matthew Wilde/Thomas Wright).
T his is the closest supernova since
Supernova 1987A! It has a reported V
magnitude of 11.7 in the discovery image
(shown here) and has not peaked yet. It’s potential peak V magnitude is about 8
since it appears to have been caught 2 weeks before peak.
a. The distance to M82 is measured (via cepheid variables) 3.5±0.3
Megaparsecs. What is the distance modulus of M82.
b. What was the absolute V magnitude of this supernova when it was
discovered? How luminous is this supernova in solar luminosities?
NOTE: The absolute V magnitude of the Sun is 4.80. – Page 1 of 3 – c. Given its potential peak magni...
View Full Document
This document was uploaded on 03/04/2014 for the course ASTROPHYS 362 at Minnesota State University Moorhead .
- Spring '14